Malicious PDF — malware analysis report

Static analysis result for SHA-256 62bcbfcbd8fd609c…

MALICIOUS

PDF

44.6 KB Created: 2021-05-10 14:41:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9773ea0443ac5f6cf6f12bb1cfc0346d SHA-1: bdfcaa71606176f51e40f0f224b1d8d6b42216ac SHA-256: 62bcbfcbd8fd609caa09fdc092b45617c0475dd916c84adc04b2439c7c358788
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links and a visual download button, directing users to potentially malicious URLs. The primary link, https://netcdn.xyz/app/406889139/hack-coin-master-apk-3.2-game-hack, is flagged as a malicious redirector. The document's content and structure suggest a lure for downloading an application, likely malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/hack-coin-master-apk-3.2-game-hack In PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000468f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x468F 25564 bytes
SHA-256: 92cdde9519708e9c7559d7fe9690441b67c9b2f4c15413874309294e37725689
font_01_sfnt_off0000801a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x801A 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off00008c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C03 18256 bytes
SHA-256: 2de3a067c92fd750cac538864d09afc8d4d9cd3de69932c6374fba6ea057edab